NEUTRON STARS WITH SMALL RADII-THE ROLE OF Δ RESONANCES

被引：52

作者：

Schuerhoff, Torsten ^{[1
,2
]}

Schramm, Stefan ^{[1
,2
,3
]}

Dexheimer, Veronica ^{[4
]}

机构：

[1] Frankfurt Inst Adv Studies, D-60438 Frankfurt, Germany

[2] Goethe Univ, Inst Theoret Phys, D-60438 Frankfurt, Germany

[3] Goethe Univ Frankfurt, Ctr Comp Sci, D-60438 Frankfurt, Germany

[4] Gettysburg Coll, Gettysburg, PA 17325 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2010年 / 724卷 / 01期

关键词：

binaries: general; stars: neutron; NUCLEAR; EQUATION; MATTER; STATE; MASS;

D O I：

10.1088/2041-8205/724/1/L74

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recent neutron star observations suggest that the masses and radii of neutron stars may be smaller than previously considered, which would disfavor a purely nucleonic equation of state (EoS). In our model, we use a flavor SU(3) sigma model that includes Delta resonances and hyperons in the EoS. We find that if the coupling of the Delta resonances to the vector mesons is slightly smaller than that of the nucleons, we can reproduce both the measured mass-radius relationship and the extrapolated EoS.

引用

页码：L74 / L77

页数：4

共 50 条

[21] The role of helium stars in the formation of double neutron stars
Ivanova, N
Belczynski, K
Kalogera, V
Rasio, FA
Taam, RE
ASTROPHYSICAL JOURNAL, 2003, 592 (01) : 475 - 485
[22] Are Small Radii of Compact Stars Ruled out by GW170817/AT2017gfo?
Burgio, G.
Drago, A.
Pagliara, G.
Schulze, H-J
Wei, J-B
ASTROPHYSICAL JOURNAL, 2018, 860 (02)
[23] INNER CRUSTS OF NEUTRON STARS IN STRONGLY QUANTIZING MAGNETIC FIELDS
Nandi, Rana
Bandyopadhyay, Debades
Mishustin, Igor N.
Greiner, Walter
ASTROPHYSICAL JOURNAL, 2011, 736 (02)
[24] Formation scenarios and mass-radius relation for neutron stars
Zdunik, J. L.
Haensel, P.
ASTRONOMY & ASTROPHYSICS, 2011, 530
[25] Optically thin outbursts of rotating neutron stars cannot be spherical
Wielgus, Maciek
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2019, 488 (04) : 4937 - 4941
[26] Neutron Stars as Laboratories for Gravity Physics
Deliduman, Cemsinan
WORKSHOP ON DARK MATTER, NEUTRINO PHYSICS AND ASTROPHYSICS CETUP 2013: VIITH INTERNATIONAL CONFERENCE ON INTERCONNECTIONS BETWEEN PARTICLE PHYSICS AND COSMOLOGY PPC 2013, 2014, 1604 : 164 - 171
[27] Neutron stars with large quark cores
Ferreira, Marcio
Pereira, Renan Camara
Providencia, Constanca
PHYSICAL REVIEW D, 2020, 101 (12)
[28] New Constraints on Radii and Tidal Deformabilities of Neutron Stars from GW170817
Most, Elias R.
Weih, Lukas R.
Rezzolla, Luciano
Schaffner-Bielich, Juergen
PHYSICAL REVIEW LETTERS, 2018, 120 (26)
[29] Symmetry energy in nuclei and neutron stars
Lattimer, James M.
NUCLEAR PHYSICS A, 2014, 928 : 276 - 295
[30] Neutron star radii, universal relations, and the role of prior distributions
Steiner, A. W.
Lattimer, J. M.
Brown, E. F.
EUROPEAN PHYSICAL JOURNAL A, 2016, 52 (02) : 1 - 16

← 1 2 3 4 5 →